Proper fuse to use, so I don’t lose

Hey that rhymes! Question for you guys (time to get use the Dead Bunnies reference in a different way now).

I just want some clarification. This refers to the fused connection from the Battery +12 to your AMPS.

Do you add up the total amount of amps (measurement...not amplifier) that your entire stereo system setup is using and grab a fuse that matches that?

Or do I look at the amplifiers that are in my system and look at the fuses they use then purchase a fuse using the highest amp fuse you found and use that?


Also, on the same subject, lets say an amplifiers will have 2 fuses on it. Both of them are labeled as 30Amps. Does this add up to 60Amps or they are 30amps and they are individual?

One last thing to address. If I have a fused connection coming from the +12 of my battery going into a Power Distro Box, does the Distro also need to be fused or do not use a fused distro box?

Thanx again guys!!

Add up all the fuses on your amp. If your amp has two fuses like you said that would be 60amps for that amp. Take the total of all amps and use a fuse that is at leat that amount (it can be larger because you are only protecting the wire not the amps but do not use a fuse that is rated more then what the power wire can handle). As for the distro box use a fuse that is rated the same as each amp ex.-amp 1 has 60 amp fuse rating use a 60 amp fuse at distro box, amp 2 has 30 amp rating use 30 amp fuse. These fuses protect your amps. Never use a higher rated fuse then what your amp is rated for.

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I believe the distro block fusing is for the wires, too.  Since you are reducing one large wire into multiple smaller wires, the rule is that those smaller wires have to have their own protective fuse....thus the convenience of having a distro with built-in fuse holders.  As stated above, fuses at the power supply end of wires are for protection of the vehicle against possible fire if damage should occur to the wire.

Here is an article on this board regarding that very question.

Read the ENTIRE post, and heed the information contained therein...

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Thank you very much haemphyst! I thank all of you for your feedback for my question. You have all been a great help to help me understand what I need to do and properly get my car fused correctly!